Pump.



J. B. GARBER.

PU MP. 7 APPLICATION FILED MAR. 20, 1915.

Patented July 4, 1916;

'IZVESSES fzwv-zvr'rom' condition whenever theplunger enters'its e OHIO,a conrommron or? 01110..

I To all whom-rt may concern: a U

Be it known that I, Jnssn B. G m n3ne, a: citizen of the UnitedStates,residingat Salem, in the county of ,Columbiana and 1 State ofYOhio, haveinvented a certain new and; useful Improvement in Pumps, of: whichthefollowing is a full, clear, and exactnescription, reference being hadto the 30601115 pan'ying drawings. I

Thls invention relatesto pumps of the class wh ch have] a rec procatingplungercarrying a'fleXible packing, as; for example,

a flanged leathepwasher.

- @n'e of the objects is to provide a simple w deviceto insurethepacking beingin proper barrel. v I t e The invention is of part cularalue H1 constructions Where "the plunger is ire- When to embodied, myinvention may p1-o videa veryconvenientarrangement of tank,

removable barrel, and removable eapmvhich latter serves thetriplepurposelof jclamping thebarrei' to the tank, ofguiding theplunger, and of constrictinglthe packing at the end of the stroke toinsure its proper reentrance into the barrel. The automatic. constrie,

tion', whenever the plunger is raised clear of the barrel, enaliile's apackingto be used which 'is pressed bntwardly by an internal tiveform ofsuch spring and' packing,

The invention is hereinafter more fully f i u descrlbed as elnbd1BC1"1Ila spraylng device wherein air is compressed in a tank by a pumplocated'axially therein and removably carried by the top of'the tank.Such a de vice 1s shown in the drawings hereofand will j "now bedescribed.

a side'elevationiof-a complete air-pressure spraying apparatus embodyingthisyinvem 1 1 tion; Fig. 2 is a verticahcentral section throughz thesame; Fig.) 3 is an enlarged ihorizontal section through th'e pllmpj cyiin detail s 70f the plunger parts. Referring specifically to, t

ae li ationfina namn 20,1915. Serial No. 15,711.,

smaller; in diameter recen e the plunger, aswilL be hereinafter "(lQSCI1b8d.",Al'InS 26. extend upwardlyand spring, and the intentionincludes an efi'ee-I Referring to'the drawings, Figure '1 is,

der, showing the construction, 'ofthe; pump plunger Fig, 42 is an'axlalsection show ng he damages; 7 i-indicates a cylindrical tank having abot tom 7 an s somewhat donieshapedtop Thentop 8 has a central openingthrough which extendswa collar 10 having a flange;

secured thereto in any suitable manner; the collar ,lOayhaving threads13 on, the (outside above theltop and having ail-inside bore 14, shownas flaring upwardly. f

mssnneannnn, or sm; onrdassmnon o irnnnnmmecoiuranr, or SALEM, I

as .'Paaaaausraa;

'12; engaging the underside ofthe top and i I 18 designates the pumpbarrel, which is provided its upper end, .on theoutside; with a: collarvl6"havlng a shallow; annular, groove m which seatsapaj'cking ring 15.

This ring rests on the'upper edgeof thesta tionary collar 10. The 0nm1sisshownq as hav ng an annular surface below l the, 'packm'gring l5,engaging the upper portion ofthe flared opening l lytoposition the lip-Q per end ofthe pump barrel Inuse, the pump T barrel, is sui iyf clampedto the tanklbyva spider member 20 on the collarilmabove which it isprovided with an annuIa-r' seat forreceiving the cola e 'larExtendingupwardlj above this seat n 21 1s, an annular flange 22;; Acylindrical surface 25 i'sbored through this flange},

andflthe portion below it, and; comrnuni-v cates Wlthiiht} pump barrel,being slightly inwardly "from the ring, and flanged porwhile adapted.to,

tionsof the spider and join in a disk-like,"

portion at thecenterl through Whichis made a a an opening serving toguidethe plun er rodn28 hi. the pump. Y

to a tsuitablehandle 3 0 andthe lower endiis threaded to receive aplunger head '32above which isa'flexible'mernber 330i leather-or likematerial, extending outwardly beyond the edge of the disk-likelxhead anddown-t The PP endof the plunger rod isfitted' wai'dly'as at 3a toengagethe interior of the pump barrel. 1 Above this flexible memberis'provided a washer 35, held in place by a nut 36. When thehandle israised to its uppermost position theplungeris drawn into the'cylindricalcavity25 in the head 20.

As this cavity is slightly smaller in diameter than barrel l8, theskirt; of the leather, washer isnecessarily constricted so that, as

thislwasherireinters theharrelethere is no danger of the advancing edge:nf- 1t-be1n is otherwiseliableto occur. It is'well known l li) havlngathreadedportion engaglngthreads that there is frequently difficulty ininserting plunger-s having flanged leather paclo ing into their barrels,and frequently disarrangenient of the skirt of such washer in theoperation of the pump. This invention overcomes the difiiculty, as,whenever the plunger is raised to its uppermost position, its packing isautomatically trued.

lVhen the device shown in the drawings is to, be charged, the plunger israised into the cavity 25 and the head 20 is unscrewed.

A suitable bar passed beneath one of the spider arms E26 furnishes aconvenient lever for unscrewing. The snug lit of the plunger in therecess of the head normally retains it there when these parts areremoved. The removal of the head and plunger frees the barrel so that itmay be simply lifted out. This enables the tank to be readily chargedthrough the central opening, after which the barrel and head arereplaced. Then, when the handle is forced down, the plunger enters thebarrel with its packing in proper condition, owing to the describedconstriction of the leather shirt.

I prefer to provide yielding means acting outwardly on the intermediateportion of tho depending skirt 3% ol' the packing. meinher, to secure athoroughly air-tight engagement with the interior o the pump barrel.This yielding means is ltiilwlvll av comprising a spring wire member 37bent back and forth into a series of loops, the outer portions 38 ofwhich press against the packing. This wire member, when in position,lies in a substantially radial plane and is preferably held in positionby a slot 40 in the plunger member 32. This spring is preferably made ofa single piece of wire of a suitable length to extend substantiallyaround the interior of the packing and act on its entire circumference.This wire, it will be seen, by tending to straighten itself, presses thepacking skirt snugly against the inner surface of the pump cylinder.

A suitable valve is arranged in. the bottoin of the pump barrel. Asshown, this comprises a disk closure la pressed upwardly by a spring 43against the under side of the bottom 42 of the barrel and thus closingopenings 46 through the bottom.

When the tank is partially filled with the liquid mixture to be sprayed,or a liquid to be forced from the container for any purpose, the pump isoperated, thereby compressing air above the liquid, which may be of asullicient pressure to allow for dis charging substantially the entirevolume of liquid without. requiring further pumpin The liquid isdischarged through a tube 50 extending vertically adjacent the wall ofthe tankto a point near the bottom and having at its upper end a collar52, provided with a nipple 53 adapted to receive a suitable hoseconnection of a hose 5a. The hose is connected at its other end to asuitable controlling valve 55, from which leads a discharge pipe 56,shown as carrying a spray nozzle 57. The controlling valve mayconveniently comprise a casing having a slidsuitable means foraccomplishing this, I

have shown a looped metal strap 58 pivoted to one of the ribs 526 at itsends and having its intermediate portion adapted to engage a hook (30integral with the depending portion of the handle 30. When the pump isin use, this latched member is merely thrown outwardly free from thehook. lVhcn it is desired to carry the tank by this handle, it islatched as shown in the drawing. If the tank is of a size suitable forknap sack spraying, rings 62 may be pivoted to the sides of the tank forreceiving a suitable strap adapted to extend over the shoulders.

of the user.

Having thus described my invention, what I claim is:

1. in a device of the character described, the combination of acoiltaincr, a removable barrel therein, a piston operating in thebarrel, and a cap operating to hold the barrel to the container andhaving a. recess of slightly smaller diameter than the interior of thebarrel adapted to receive the piston.

2. The combination of a container, :1 removable barrel therein, a pistonoccupying the barrel and having a rod, a cap operatin to clamp thebarrel to the container an forming a guide for the rod and having acavity which is adapted to receive the piston when withdrawn by thebarrel.

3. The combination, with a container having a collar with an. externalthread, of a pump barrel extending into the container and having anexternal flange over-hanging said collar, an internally threaded headscrewed onto said collar and clamping the pump barrel in position, apiston in the barrel and an actuating rod therefor guided by said head.

4. In a device of the character described, the combination with a pumpbarrel having an external flange, of a support therefor adapted toembrace the barrel adjacent one end, said flange overhanging and restingon the support, a clamping head adapted to be removably secured to saidsupport and secure the pump barrel in position, a piston in the barreland an actuating rod therefor extending through said head, and a bore insaid head registering with thc'bore of the cylinder and slightly smallerin diameter,

whereby the piston may be drawn into said bore allowing the removal ofthe head together with the piston and enabling the piston to be guidedinto its barrel when the parts are assembled.

5. The combination, with a container having an externally threaded opencollar, of a removable barrel occupying said collar and having anoutward flange overhanging the upper edge of the collar, a cap having aninternal thread engaging the collar and having a shoulder adapted tobear down on the flange, whereby the cap may clamp the barrel in place,said cap having an internal recess of slightly smaller diameter thanthebarrel, a rod extending through the cap, and a piston on the rod adaptedto be drawn into said smaller recess in the cap.

6. Ina pump, the combination of a barrel, a removable head having arecess opposite the end of the barrel, and of slightly smaller diameterthan the barrel, a plunger within the barrel having a packing comprising a flexible disk flanged in a direction away from the head, and aspring within the skirt of the packing pressing it toward the wall ofthe barrel, said recess being adapted to receive the plunger andconstrictthe packing.

In testimony whereof, I hereunto aliix my signature in the presence oftwo witnesses."

JESSE B. GARBER.

Witnesses CHARLES SHAFFEK, FRANK FILsoN.

